[PATCH] Avoid using up static TLS surplus for optimizations [BZ #25051]

[Szabolcs Nagy]

* Florian Weimer via Libc-alpha <libc-alpha@sourceware.org> [2020-06-04 18:23:03 +0200]:
> One more high-level comment:
> 
> Would it be much work to separate the namespace number tuning from the
> static TLS changes as far as optimizations are concerned?
> 
> I'd feel comfortable reviewing the namespace changes, but not the TLS
> changes.

i will try to break up the patch.